Does anyone at all here like Harleys?

Does anyone at all here like Harleys?

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Discussion

gareth_r

5,726 posts

237 months

Thursday 10th June 2021
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BroadsRS6 said:
S and S do a 143 cubic inch motor for late model HDs, with 162 bhp and 151 lb-ft on offer with the right set up.

That capacity, I believe, is 2,340cc of badass V Twin grunt and I am sure it will feel bloody rapid and sound evil.
Lately I have become unreasonably interested in "performance bagger" videos on YouTube.

Which leads to wondering if there's any way to squeeze those 150+ torques (© J. Clarkson) into a normal motorcycle. smile I suspect that it might be possible with a Quaife gearbox à la Spirit of Semtex, but I'd want something a bit more 1960s in appearance (but not in brakes and suspension) and, if I'm honest, a fair bit less powerful than that S&S 143.


This is Spirit of Semtex btw



200Plus Club

10,752 posts

278 months

Thursday 10th June 2021
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Just put some Trident open pipes on my Bobber Black, sounds great (loud but not excessive as I left the cat in). Handles really well, halfway house to a Harley when you don't really want a Harley?

crofty1984

15,858 posts

204 months

Thursday 10th June 2021
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I think they're good bikes, but for the money they cost there's always another bike I'd prefer. I wouldn't mind a Sportster maybe.

m5psm

16 posts

34 months

Thursday 10th June 2021
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andburg said:
Yup it doesn’t silence much, the x pipe seems to create a flat spot in power.

Odd that it gets in the way of your rear pegs though, it’s same as mine and nowhere near them, you don’t even have rear pegs in the pic!

I have a set of the v&h quiet baffles but never fitted them as I’ve read countless times they make almost no difference. On the dyno at a rally mine hit 126db.

If your front pipes aren’t corroded to st then you’ll get some money for the exhaust when you sell it on
It came with the exhaust fitted and the rear pegs and carriers in a bag being told they don’t fit with those pipes. Might have to try them.

Never noticed a flat spot, but to be fair, don’t really thrash it anyway.

Mr Tidy

22,310 posts

127 months

Friday 11th June 2021
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BroadsRS6 said:
S and S do a 143 cubic inch motor for late model HDs, with 162 bhp and 151 lb-ft on offer with the right set up.

That capacity, i believe, is 2,340cc of badass V Twin grunt and i am sure it will feel bloody rapid and sound evil.
That sounds pretty pathetic to me! rolleyes

In my biking days I had a KH500 that produced about 60 bhp and an RD 250LC that had about 35 hhp.

Even my 4 wheel BMW 325ti with a 2.5 engine was rated at 192bhp! laugh

Just badass noise for the sake of noise. bolted to a 2 wheeled tractor IMHO.

andburg

7,286 posts

169 months

Friday 11th June 2021
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m5psm said:
It came with the exhaust fitted and the rear pegs and carriers in a bag being told they don’t fit with those pipes. Might have to try them.

Never noticed a flat spot, but to be fair, don’t really thrash it anyway.
Happy to drop you some better pictures of that area of mine if you have trouble.

Drop me a PM if you want me to.

bimsb6

8,040 posts

221 months

Friday 11th June 2021
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Mr Tidy said:
BroadsRS6 said:
S and S do a 143 cubic inch motor for late model HDs, with 162 bhp and 151 lb-ft on offer with the right set up.

That capacity, i believe, is 2,340cc of badass V Twin grunt and i am sure it will feel bloody rapid and sound evil.
That sounds pretty pathetic to me! rolleyes

In my biking days I had a KH500 that produced about 60 bhp and an RD 250LC that had about 35 hhp.

Even my 4 wheel BMW 325ti with a 2.5 engine was rated at 192bhp! laugh

Just badass noise for the sake of noise. bolted to a 2 wheeled tractor IMHO.
So how many japanese twins of any capacity produce those figures ?

Pothole

34,367 posts

282 months

Friday 11th June 2021
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bimsb6 said:
So how many japanese twins of any capacity produce those figures ?
VTR1000SP-1 made 125+ stock.SP-2 made 136.

Iminquarantine

2,168 posts

44 months

Friday 11th June 2021
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A 2.3 liter engine in a bike is just silly. How much higher will the fuel consumption be than the same power engine with smaller capacity.

andburg

7,286 posts

169 months

Friday 11th June 2021
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Iminquarantine said:
A 2.3 liter engine in a bike is just silly. How much higher will the fuel consumption be than the same power engine with smaller capacity.
its never that simple. Broadly speaking long stroke engines are more efficient than short stroke.

You've only got to look at some of the downsized petrol engines in cars, 1.0 turbo engines replacing 1.6l petrol, as soon as you use the power you ruin the fuel economy.

anonymous-user

54 months

Friday 11th June 2021
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Iminquarantine said:
A 2.3 liter engine in a bike is just silly. How much higher will the fuel consumption be than the same power engine with smaller capacity.
Most things are silly when it comes to motorbikes. Theres nothing sensible about sitting astride an engine and launching yourself at the horizon. Doesn't mean it isn't fun though

KTMsm

26,856 posts

263 months

Friday 11th June 2021
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andburg said:
Iminquarantine said:
A 2.3 liter engine in a bike is just silly. How much higher will the fuel consumption be than the same power engine with smaller capacity.
its never that simple. Broadly speaking long stroke engines are more efficient than short stroke.

You've only got to look at some of the downsized petrol engines in cars, 1.0 turbo engines replacing 1.6l petrol, as soon as you use the power you ruin the fuel economy.
The larger / heavier components mean a larger engine (built to a similar spec) will generally be less efficient than a smaller one.

Whilst low down lazy torque is what Harley is about they are tied to "heritage" too much so can't progress.

andburg

7,286 posts

169 months

Friday 11th June 2021
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I'll admit I'm no expert, but a bigger torquier lower revving engine will be geared differently so will run slower meaning less injection cycles per mph which will countract the greater amount of air/fuel required cycle.

Edited by andburg on Friday 11th June 12:08

Pothole

34,367 posts

282 months

Friday 11th June 2021
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Iminquarantine said:
A 2.3 liter engine in a bike is just silly. How much higher will the fuel consumption be than the same power engine with smaller capacity.
Not much. I went to Cornwall and back with a mate on a 2300cc Rocket III. He reckons he gets mid 40s mpg. My Tiger Sport 1050 got about the same.

200Plus Club

10,752 posts

278 months

Friday 11th June 2021
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My 1200 twin Bonneville high torque is showing as much as 70mpg on a run in 6th. 60mpg regularly with cruise control on while doing distances.
I don't bother looking what it does normally as the tank is tiny anyway circa 9 quid fill!

m5psm

16 posts

34 months

Friday 11th June 2021
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andburg said:
Happy to drop you some better pictures of that area of mine if you have trouble.

Drop me a PM if you want me to.
Cheers
Messaged you… I think

Mr Tidy

22,310 posts

127 months

Saturday 12th June 2021
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bimsb6 said:
So how many japanese twins of any capacity produce those figures ?
Have you heard of the Yamaha VMAX?

But most Japanese manufacturers realised an I4 was the way to go for power hence the Yamaha R1 and Suzuki Hyabusa.

HD Adam

5,148 posts

184 months

Saturday 12th June 2021
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Mr Tidy said:
bimsb6 said:
So how many japanese twins of any capacity produce those figures ?
Have you heard of the Yamaha VMAX?

But most Japanese manufacturers realised an I4 was the way to go for power hence the Yamaha R1 and Suzuki Hyabusa.
VMAX is a V4 matey

Mr Tidy

22,310 posts

127 months

Saturday 12th June 2021
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HD Adam said:
VMAX is a V4 matey
Oops! rolleyes

Maybe the Japanese manufacturers left V-twins to the Americans and Italians!

Edited by Mr Tidy on Saturday 12th June 02:29

Almighty

36 posts

36 months

Saturday 12th June 2021
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This is the way.