The friendly "dumb" bike questions thread

The friendly "dumb" bike questions thread

Author
Discussion

A500leroy

6,274 posts

129 months

Saturday 28th September 2024
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Carb rebuild.

Which bits are best to replace and which are best just to clean?

s p a c e m a n

11,109 posts

159 months

Saturday 28th September 2024
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Its always been buy a whole kit and then open it up and make decisions from there for me. Normally as long as the jets are clean and the needle and float works everything else is 'just because I'm in there' and the stuff in the kit can be worse quality than original.

A500leroy

6,274 posts

129 months

Tuesday 1st October 2024
quotequote all
s p a c e m a n said:
Its always been buy a whole kit and then open it up and make decisions from there for me. Normally as long as the jets are clean and the needle and float works everything else is 'just because I'm in there' and the stuff in the kit can be worse quality than original.
Damn no kit available, certain parts unobtainium.
Bean offered the following plus a gasket kit,
float valve at £7.00 plus VAT, the float at £36.23 plus VAT and the mixture screw at £18.91 plus VAT.

Any of these worth changing?
jet needle and main jet are discontinued and unavailable.

s p a c e m a n

11,109 posts

159 months

Tuesday 1st October 2024
quotequote all
I'm guessing that a float valve is the needle so that would probably be a good purchase, I wouldn't bother with the float unless the original has a hole in it? Submerge it in a bowl of water and look for bubbles, leave it in there and see if it fills with water. Gasket kit is a must, can of carb cleaner and just blow all of the jets and emulsion tube out and clean any crap in the bottom of the bowl.

Only tip I can give is to lay it all out on a table methodically and take pictures if you've never done it before, there's not much to them and stuff doesn't really wear out or need replacing, just cleaning when it gets all gummed up.

shirt

23,918 posts

212 months

Wednesday 2nd October 2024
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I have a track bike with no side stand, usually supported on a read paddock stand with bobbins.

I just moved house and the space it needs to fit into (the hallway of a 17th floor apartment!) is too short for the bike and stand. The bike would fit perfectly with a gap each end, but has no means of support.

Is there an alternative stand that would work, or do I need to fabricate something? Thinking maybe a bar through the back axle with an A frame at each side and mounted to a piece of flat steel with casters. That way I could move it out from the wall and roll it around.

Anyone done / seen similar or spot the flaw in this cunning plan?

Pebbles167

3,968 posts

163 months

Wednesday 2nd October 2024
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Sounds like a faff. If your need is merely support, just buy a wheel chock and stick it one end of the hall. I assume you'd have a few inches beyond the front wheel?

Loads of different prices and models so maybe do some research, but I used to store my track bike in the bedroom of my flat (ground fooor!) using one and it was fine.


shirt

23,918 posts

212 months

Wednesday 2nd October 2024
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The issue is that it’s an alcove. Easier to nose the bike in and then swing the back end round. I did think of those and have a spare one in the garage somewhere.

Just found this from pitbull which seems ideal if there’s a stockist here


KTMsm

28,321 posts

274 months

Wednesday 2nd October 2024
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shirt said:
The issue is that it’s an alcove. Easier to nose the bike in and then swing the back end round. I did think of those and have a spare one in the garage somewhere.

Just found this from pitbull which seems ideal if there’s a stockist here

That won't swing the back end round though, you'd need something with casters.

There was a thread recently where someone had to get one into a tight garage and there were various options mentioned

shirt

23,918 posts

212 months

Wednesday 2nd October 2024
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I’ll have a search.

It will slide well enough on a tiled floor. The current one does. Albeit if I can find those funky sideways moving wheels I’ll fab my own.

Krikkit

27,237 posts

192 months

Wednesday 2nd October 2024
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shirt said:
I’ll have a search.

It will slide well enough on a tiled floor. The current one does. Albeit if I can find those funky sideways moving wheels I’ll fab my own.
You can get omnidirectional wheels which might retrofit

Pebbles167

3,968 posts

163 months

Wednesday 2nd October 2024
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I always just lifted the bike from the rear wheel with a hand either side, since a sports bike is so light you're only usually lifting about 80kg.

Got a picture of the alcove? If its almost like a big fireplace set into the wall, you might not have quite enough room to the side to do the above. I guess you could always get front wheel into the chock, then get a wheeled trolley jack with a bit of wood under the swing arm to push it in the last couple of feet.

I learned the hard way how much a bike can be man handled once when I was the last person to leave Pembrey, only to then realise I'd forgotten my ramp. Getting a GSXR into a transit this way wasn't exactly fun, but was character building perhaps.

shirt

23,918 posts

212 months

Wednesday 2nd October 2024
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Omni wheels are $100 each for a decent one. Found some much cheaper but they don’t look very robust.

Tbh I think I’ll start by fabricating a pit Bull copy with regular wheels. I if I back it in from the right of the photo should be able to get it close enough to the wall without much drama. I had it propped against the wall on the crash bobbins and that door still opened.

A500leroy

6,274 posts

129 months

Wednesday 2nd October 2024
quotequote all
s p a c e m a n said:
I'm guessing that a float valve is the needle so that would probably be a good purchase, I wouldn't bother with the float unless the original has a hole in it? Submerge it in a bowl of water and look for bubbles, leave it in there and see if it fills with water. Gasket kit is a must, can of carb cleaner and just blow all of the jets and emulsion tube out and clean any crap in the bottom of the bowl.

Only tip I can give is to lay it all out on a table methodically and take pictures if you've never done it before, there's not much to them and stuff doesn't really wear out or need replacing, just cleaning when it gets all gummed up.
Ordered from Holland!
I've done a su from a bl mini before, but I have no idea what the parts are called, I just did it slowly and swapped old part for new part.

shirt

23,918 posts

212 months

Wednesday 2nd October 2024
quotequote all
Found the same brand Omni wheels that dynamoto use. Their stands are $800 a set. The fab is simple.

https://www.grainger.com/product/MAGLINER-Replacem...


PistonRings

277 posts

69 months

Monday 7th October 2024
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My trusty Sena SMH5 seems to have died after a particularly wet ride home last week.

Looking at replacements, a mesh system would be better going forwards - I have a trip planned next year with 3 guys so we will need a mesh system anyway.

But I have a few friends I ride with who also have the SMH5. Does an intercom exist that I could use to connect to them until they replace theirs?

I've seen some places say the Sena 50S can do it, but then when I look at any websites selling it they don't mention it - https://www.sportsbikeshop.co.uk/motorcycle_parts/...


RizzoTheRat

26,446 posts

203 months

Monday 7th October 2024
quotequote all
shirt said:
I have a track bike with no side stand, usually supported on a read paddock stand with bobbins.

I just moved house and the space it needs to fit into (the hallway of a 17th floor apartment!) is too short for the bike and stand. The bike would fit perfectly with a gap each end, but has no means of support.

Is there an alternative stand that would work, or do I need to fabricate something? Thinking maybe a bar through the back axle with an A frame at each side and mounted to a piece of flat steel with casters. That way I could move it out from the wall and roll it around.

Anyone done / seen similar or spot the flaw in this cunning plan?
Abba stands lift the bike from the swing arm pivot area, and you can then get a wheels platform it sits on



Speed addicted

5,826 posts

238 months

Monday 7th October 2024
quotequote all
PistonRings said:
My trusty Sena SMH5 seems to have died after a particularly wet ride home last week.

Looking at replacements, a mesh system would be better going forwards - I have a trip planned next year with 3 guys so we will need a mesh system anyway.

But I have a few friends I ride with who also have the SMH5. Does an intercom exist that I could use to connect to them until they replace theirs?

I've seen some places say the Sena 50S can do it, but then when I look at any websites selling it they don't mention it - https://www.sportsbikeshop.co.uk/motorcycle_parts/...
I’m currently using a Cardo which can apparently talk to pretty much any intercom. What we’ve found is they either work seamlessly of you get a frustrating hour or so trying to link up for no apparent reason.
Sometimes linking to other Cardo sets can also be an issue. Otherwise it’s been really good!

I’ve had the same issues with other intercoms that can ‘connect to anything’ so it’s all a bit hit and miss.

HybridTheory

500 posts

43 months

Thursday 10th October 2024
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How much slack should a chain have as I've tightened mine and it's pretty tight now with a bit of bounce but in my work car park I felt up a couple of drive chains and mine felt the tightest by far !

KTMsm

28,321 posts

274 months

Thursday 10th October 2024
quotequote all
Different bikes vary, Google and download the manual. It will be in it


Speed addicted

5,826 posts

238 months

Thursday 10th October 2024
quotequote all
HybridTheory said:
How much slack should a chain have as I've tightened mine and it's pretty tight now with a bit of bounce but in my work car park I felt up a couple of drive chains and mine felt the tightest by far !
You need some slack to allow for suspension movement. Mine are usually about 30-35mm from memory.