Yokomo YZ-2 CAL3.1 Build
Discussion
squareflops said:
Well that's the million dollar question isn't it, or more so where will I be out next, there's no where to bloody go! Probably COBRA for the next round in all likelihood, will you be racing too? :
Have you checked out http://www.caldicotrcracers.co.uk/?. They race every Friday night in Caerwent. A lot of the COBRA guys also race down there so maybe worth looking into.
squareflops said:
The carpet does provide higher traction at least!
Where's this buggy thread then
It's coming, Its coming. I realised, apart from the buggy. I didn't have any other shinny stuff to show off. However, like you I ordered some tools, a stand etc. All arrived today, so i'll take some photos and get a thread up later Where's this buggy thread then
paulstarrally said:
It's coming, Its coming. I realised, apart from the buggy. I didn't have any other shinny stuff to show off. However, like you I ordered some tools, a stand etc. All arrived today, so i'll take some photos and get a thread up later
excellent 
so agree, got to have shiny things or what’s the point
look forward to it budOne of the boys said about going to Caldicot this Friday but realised I don’t have BRCA membership yet. Hopefully get there in the next few weeks, maybe you’ll be free to get down there too
Id be up for another Sat Midlands Raceway visit too
My thread for those interested - https://www.pistonheads.com/gassing/topic.asp?h=0&...
I'll stop hi-jacking yours now Squareflops
I'll stop hi-jacking yours now Squareflops
squareflops said:
One of the boys said about going to Caldicot this Friday but realised I don’t have BRCA membership yet. Hopefully get there in the next few weeks, maybe you’ll be free to get down there too
Maybe worth popping them a message and ask if your able to race once or twice without the BRCA membership. I think you can in Cobra. Getting myself to Calidot tonight for a club race evening. Not sure what to expect (will probably involve racing rc cars on carpet though ) but quite looking forward to it.
In preparedness i’ve upgraded my transmitter (not necessary but really fancied this)
it’s a lovely thing to hold in the hand, it feels much more premium when compared to the GT5 and the large touch screen is pretty sweet. Unsure yet how it performs, will find out later!
Also out of necessity i’ve got one of these
I feel a little aggrieved having to spend the best part of £60 on the transponder, it’s not shiny and doesn’t make me go faster / look better! But essential of course.
Hioefully it being on top of the servo doesn’t cause any issues but no doubt it will and somehow ruin the evening
I’ll update tomorrow most likely!
In preparedness i’ve upgraded my transmitter (not necessary but really fancied this)
it’s a lovely thing to hold in the hand, it feels much more premium when compared to the GT5 and the large touch screen is pretty sweet. Unsure yet how it performs, will find out later!
Also out of necessity i’ve got one of these
I feel a little aggrieved having to spend the best part of £60 on the transponder, it’s not shiny and doesn’t make me go faster / look better! But essential of course.
Hioefully it being on top of the servo doesn’t cause any issues but no doubt it will and somehow ruin the evening
I’ll update tomorrow most likely!
Well it is technically tomorrow..
What great night. The evening was held at Caerwent Community Centre which was lovely and warm on arrival (that's important
). I was quite surprised by the level of commitment from most in attendance; it looked like some guys were moving house the amount of boxes and bags they had with them, I'm sure they need all that stuff!
Me and the other boy who I went with were up first (of 6 rounds) which stayed as a theme for the evening which was easy to follow. The fiddling area had a big TV screen up with all the heats running so when it was heat 6 we knew we were up next in group 1. The qualifiers came round in just the right time, enough time to have a tinker or fettle but not a long wait so as to get bored. The qualifiers were fun as was marshalling in-between when it was our turn.
I didn't make too many changes to the YZ-2 as it was responding quite well to the carpet. A little too well to begin with as boy was their grip! It's a new carpet apparently and (unlike Midlands Raceway) has massive grip. I found with the NB4 transmitter that the steering was waaaay too much. Too much angle and too much speed. The car was almost uncontrollable so after the first heat I turned down the speed of the steering servo nd dialled back the EPA on the Flysky which made things much calmer and more controllable.
Enough waffle. My little pit area
and on the table after a heat before going off to Marshall
Some of the track and rostrum
I managed to get a little quicker though out the evening starting off in the 20s and finishing in the 15s/16s. I actually won my final
the F final but hey a win is a win and to be fair im just going to have a little play so the win was a little bonus I guess. Watching the A Final flipping heck those boys are quick! Another few leagues above where I'll ever get to but fun to watch the fast boys go fast.
A lovely club with welcoming friendly chatty blokes and good racing, happy days.. Will be going again soon
What great night. The evening was held at Caerwent Community Centre which was lovely and warm on arrival (that's important
). I was quite surprised by the level of commitment from most in attendance; it looked like some guys were moving house the amount of boxes and bags they had with them, I'm sure they need all that stuff! Me and the other boy who I went with were up first (of 6 rounds) which stayed as a theme for the evening which was easy to follow. The fiddling area had a big TV screen up with all the heats running so when it was heat 6 we knew we were up next in group 1. The qualifiers came round in just the right time, enough time to have a tinker or fettle but not a long wait so as to get bored. The qualifiers were fun as was marshalling in-between when it was our turn.
I didn't make too many changes to the YZ-2 as it was responding quite well to the carpet. A little too well to begin with as boy was their grip! It's a new carpet apparently and (unlike Midlands Raceway) has massive grip. I found with the NB4 transmitter that the steering was waaaay too much. Too much angle and too much speed. The car was almost uncontrollable so after the first heat I turned down the speed of the steering servo nd dialled back the EPA on the Flysky which made things much calmer and more controllable.
Enough waffle. My little pit area
and on the table after a heat before going off to Marshall
Some of the track and rostrum
I managed to get a little quicker though out the evening starting off in the 20s and finishing in the 15s/16s. I actually won my final
the F final but hey a win is a win and to be fair im just going to have a little play so the win was a little bonus I guess. Watching the A Final flipping heck those boys are quick! Another few leagues above where I'll ever get to but fun to watch the fast boys go fast.A lovely club with welcoming friendly chatty blokes and good racing, happy days.. Will be going again soon
squareflops said:
Getting myself to Calidot tonight for a club race evening. Not sure what to expect (will probably involve racing rc cars on carpet though ) but quite looking forward to it.
In preparedness i’ve upgraded my transmitter (not necessary but really fancied this)
it’s a lovely thing to hold in the hand, it feels much more premium when compared to the GT5 and the large touch screen is pretty sweet. Unsure yet how it performs, will find out later!
Also out of necessity i’ve got one of these
I feel a little aggrieved having to spend the best part of £60 on the transponder, it’s not shiny and doesn’t make me go faster / look better! But essential of course.
Hioefully it being on top of the servo doesn’t cause any issues but no doubt it will and somehow ruin the evening
I’ll update tomorrow most likely!
Great to see that you keep investing in your essential kit bud!In preparedness i’ve upgraded my transmitter (not necessary but really fancied this)
it’s a lovely thing to hold in the hand, it feels much more premium when compared to the GT5 and the large touch screen is pretty sweet. Unsure yet how it performs, will find out later!
Also out of necessity i’ve got one of these
I feel a little aggrieved having to spend the best part of £60 on the transponder, it’s not shiny and doesn’t make me go faster / look better! But essential of course.
Hioefully it being on top of the servo doesn’t cause any issues but no doubt it will and somehow ruin the evening
I’ll update tomorrow most likely!
I love my Noble NB4, as you say for the cost it has an amazing premium feel of quality about it.
Quick question how come you are using it without the big battery base attached?
Surely it must feel a bit too heavy and unbalanced without that big weight on the bottom?
Each to their own of course, I was just curious as to why you wouldn’t use it and have it attached all the time?
It looks like you had a great evening out racing too, and to win a final is a great achievement.
I really must get back out to Midlands Raceway to get myself some laps down on my RC10!
Looks like you had a cracking evening and coming away with a win in your final is a bit of a result on your 1st time out 👍.
Silly question, but what’s the table and chair situation there? Bring your own or do they have some you can use?.
Also, what diff and shock oils you currently using. The kit oils or have you changed them. Just about to order some.
Silly question, but what’s the table and chair situation there? Bring your own or do they have some you can use?.
Also, what diff and shock oils you currently using. The kit oils or have you changed them. Just about to order some.
nigelpugh7 said:
Great to see that you keep investing in your essential kit bud!
I love my Noble NB4, as you say for the cost it has an amazing premium feel of quality about it.
Quick question how come you are using it without the big battery base attached?
Surely it must feel a bit too heavy and unbalanced without that big weight on the bottom?
Each to their own of course, I was just curious as to why you wouldn’t use it and have it attached all the time?
It looks like you had a great evening out racing too, and to win a final is a great achievement.
I really must get back out to Midlands Raceway to get myself some laps down on my RC10!
Cheers bud! It really is an awesome bit of kit. I'm surprised it's been out for so long. No doubt they'll bring a new one out soon but this one is more than enough TX for me for now. I love my Noble NB4, as you say for the cost it has an amazing premium feel of quality about it.
Quick question how come you are using it without the big battery base attached?
Surely it must feel a bit too heavy and unbalanced without that big weight on the bottom?
Each to their own of course, I was just curious as to why you wouldn’t use it and have it attached all the time?
It looks like you had a great evening out racing too, and to win a final is a great achievement.
I really must get back out to Midlands Raceway to get myself some laps down on my RC10!
Good question re the battery base. I think it is just that and it comes down to personal preference. I haven't actually run a round with the base on but I quite like the minimalist feel if it without. I'll try it with it on next time maybe and I may prefer it.
We're thinking of going back up to Midlands soon, maybe the dates could coincide
paulstarrally said:
Looks like you had a cracking evening and coming away with a win in your final is a bit of a result on your 1st time out ??.
Silly question, but what’s the table and chair situation there? Bring your own or do they have some you can use?.
Also, what diff and shock oils you currently using. The kit oils or have you changed them. Just about to order some.
Yea was happy with that bud but didn't want the strive to win to spoil the evening overall, I just tried to get around without too many issues! Silly question, but what’s the table and chair situation there? Bring your own or do they have some you can use?.
Also, what diff and shock oils you currently using. The kit oils or have you changed them. Just about to order some.
Good question again re the venue. Thankfully Caldicot provide tables chairs and power sockets which is a big help, having to take a table and chair to COBRA adds a level of cumbersome which isn't ideal.
Yea im running the kit oils in the diff and shocks. That conversation came up last night funnily enough and most people seem to be running much heavier viscosities in the diff, almost locked in some cases. I didn't find traction/turning an issue but without trialling different oils I won't know if they're an improvement. You might be telling me soon bud!
Thanks Dom. I've got a party to go to on Friday night but seriously considering blowing it off and going racing again.
Had a little potch tonight, barely worth an update. Since racing I wanted to experiment with getting the weight forward to try and increase front bite and stop the thing wheelie'ing quite so much. I decided to do this by moving the adjustable battery tray forward. The caps for the ESC were in the way so a bit of jimmying was required to relocate stuff. There really isn't much room up the front of these so had to fiddle for a while to make sure everything would fit whilst still being able to connect to the battery with my (infuriatingly) short power cables. Still proper irks me that they were cut too short (at least the + wire)
Pulling it apart trying to figure out the best position
This is what I ended up with. The ESC is now slightly left of centre looking from the front which to my mind balances the car a little better from left to right and the battery is now about 1cm further forward.
Whilst faffing I noticed one of the ESC fan blades is broken at about 3 o'clock as seen here, not sure how that happened
Also a question; I found at Caldicot I was running out of mechanical speed about half way down the main straight. I'm currently at 24t pinion. What would you guys recommend? Down to 22t? I'd like a little more legs without gearing it up to 400mph and loosing a load of acceleration..
Quite an enjoyable hour fettling
edit: it’s up on the pinion for more speed isn’t it!
Had a little potch tonight, barely worth an update. Since racing I wanted to experiment with getting the weight forward to try and increase front bite and stop the thing wheelie'ing quite so much. I decided to do this by moving the adjustable battery tray forward. The caps for the ESC were in the way so a bit of jimmying was required to relocate stuff. There really isn't much room up the front of these so had to fiddle for a while to make sure everything would fit whilst still being able to connect to the battery with my (infuriatingly) short power cables. Still proper irks me that they were cut too short (at least the + wire)
Pulling it apart trying to figure out the best position
This is what I ended up with. The ESC is now slightly left of centre looking from the front which to my mind balances the car a little better from left to right and the battery is now about 1cm further forward.
Whilst faffing I noticed one of the ESC fan blades is broken at about 3 o'clock as seen here, not sure how that happened
Also a question; I found at Caldicot I was running out of mechanical speed about half way down the main straight. I'm currently at 24t pinion. What would you guys recommend? Down to 22t? I'd like a little more legs without gearing it up to 400mph and loosing a load of acceleration..
Quite an enjoyable hour fettling
edit: it’s up on the pinion for more speed isn’t it!
Edited by squareflops on Wednesday 20th December 19:12
dom9 said:
Just catching up and was going to say
Couple more teeth and see how you go but it sounds like you're going really well so time for some more motor, maybe?
I've gone up to 27t for now and suck it and see a the next race meet at Caldi (5th Jan) all being equal. There's definitely a bit more expansion on the tyres. No idea if it will be correct for the next event though. Not sure about a new motor, will know in. few more events I guess! Couple more teeth and see how you go but it sounds like you're going really well so time for some more motor, maybe?
need to de-lint the shocks too
A jump of 3 teeth is quite a lot but should give you more top end that you crave.....
Tbh gearing up I have never noticed a loss in acceleration brushless motors have a lot of punch so I wouldn't worry about that.
Keep an eye on the motor heat especially in practice where generally you may run longer than 5-6 mins now you have geared up. That motor should be plenty quick enough for a good while so I would resist the temptation to go much lower turn before you have played with timing etc.
Is your Spur 80T ? If so FDR is running at about 7.7 you could probably go up another tooth on pinion but as above keep an eye on temps..............another option is esc settings turbo or adding timing etc have similar effect to gearing up with less risk of getting the mesh wrong.
On that point your mesh looks quite loose (could just be photo though) . Should just be able to hear a tiny click when moving the spur.
Glad to see you are enjoying it, frustrating hobby a lot of the time but very rewarding when you have a good race as its very challenging.
Tbh gearing up I have never noticed a loss in acceleration brushless motors have a lot of punch so I wouldn't worry about that.
Keep an eye on the motor heat especially in practice where generally you may run longer than 5-6 mins now you have geared up. That motor should be plenty quick enough for a good while so I would resist the temptation to go much lower turn before you have played with timing etc.
Is your Spur 80T ? If so FDR is running at about 7.7 you could probably go up another tooth on pinion but as above keep an eye on temps..............another option is esc settings turbo or adding timing etc have similar effect to gearing up with less risk of getting the mesh wrong.
On that point your mesh looks quite loose (could just be photo though) . Should just be able to hear a tiny click when moving the spur.
Glad to see you are enjoying it, frustrating hobby a lot of the time but very rewarding when you have a good race as its very challenging.
All very good points bud. Yea quite the jump but will see how it goes, if it's still acceleating at the end of the straight I've got the 26t to go down to. Yea heat is a consideration, thankfully my mate has a heat gun to temp the motor and I've got the Protek motor fan now if I need it for temps. I've bumped up the boost and turbo a little also so will see how she goes. Yea it's the standard 80t on the spur.
You might be right on the mesh, it sounds a little crispier than the 24t so think I'll need to move it in slightly.
Can be super frustrating but after the last evening I'm on a high with it! Looking forward to the next event on the 5th
I'll be doing a bit of shimming of the front hubs tonight I think as there's quite a bit of play in them now everything is bedded in; that's assuming I have some suitably sized shims left over from the build.
You might be right on the mesh, it sounds a little crispier than the 24t so think I'll need to move it in slightly.
Can be super frustrating but after the last evening I'm on a high with it! Looking forward to the next event on the 5th
I'll be doing a bit of shimming of the front hubs tonight I think as there's quite a bit of play in them now everything is bedded in; that's assuming I have some suitably sized shims left over from the build.
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