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How Much Hp will this frame take? #734896
05/11/18 4:44 pm
05/11/18 4:44 pm
Joined: Aug 2010
Posts: 53
North of 49
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LightningPower Offline OP

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LightningPower  Offline OP

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North of 49
Hi All,

Wondering how much horsepower a BSA Oil-in-Frame frame will handle.

Thoughts?

LP


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Re: How Much Hp will this frame take? [Re: LightningPower] #734917
05/11/18 8:15 pm
05/11/18 8:15 pm
Joined: Oct 2009
Posts: 496
new jersey usa
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pushrod tom Offline
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pushrod tom  Offline
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Joined: Oct 2009
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In what wondering circumstance? PRT

Re: How Much Hp will this frame take? [Re: pushrod tom] #734965
05/12/18 6:30 am
05/12/18 6:30 am
Joined: Aug 2010
Posts: 53
North of 49
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LightningPower Offline OP

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LightningPower  Offline OP

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Joined: Aug 2010
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North of 49
Something ridiculous. I had a 900 ninja that was crashed by a prospective buyer. I'm not crotch rocket guy, so no interest in rebuilding. But having that low mileage motor with 140 bored horses on the shelf is nagging at me. So I thought, 'hay, what if I put that in to a later Commando frame or an OIF? I expect it would ruin the commando frame and me along with it, but with some reinforcing the OIF might survive. They are also plentiful and cheap. I know its a terrible idea to the purist or even the average brit bike enthusiast, but I have a lot of proper British Motorcycles already. I wouldn't feel bad modifying an OIF that was unloved and rusting in a friend's backyard.


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Re: How Much Hp will this frame take? [Re: LightningPower] #734987
05/12/18 12:03 pm
05/12/18 12:03 pm
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pushrod tom Offline
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Hmmm...... We have had many runs on a straight track with 100+ hp in a stock dry frame. Had to build a swing arm to handle it. But the ninja weighs more, has a radiator etc. You will want a better front end with real brakes and probably a bunch of reinforcing. Will it even fit! Sounds a bit wacky to me but I am a geezer PRT

Re: How Much Hp will this frame take? [Re: LightningPower] #735020
05/12/18 4:30 pm
05/12/18 4:30 pm
Joined: Dec 2013
Posts: 4,429
ohio, usa
kevin roberts Online content

DOPE
kevin roberts  Online Content

DOPE

Joined: Dec 2013
Posts: 4,429
ohio, usa
Originally Posted by LightningPower
Something ridiculous. I had a 900 ninja that was crashed by a prospective buyer. I'm not crotch rocket guy, so no interest in rebuilding. But having that low mileage motor with 140 bored horses on the shelf is nagging at me. So I thought, 'hay, what if I put that in to a later Commando frame or an OIF? I expect it would ruin the commando frame and me along with it, but with some reinforcing the OIF might survive. They are also plentiful and cheap. I know its a terrible idea to the purist or even the average brit bike enthusiast, but I have a lot of proper British Motorcycles already. I wouldn't feel bad modifying an OIF that was unloved and rusting in a friend's backyard.



lol, i've been thinking of putting a triumph 650 into a 250 ninja frame:

[Linked Image]

these have been around forever and are as common as dirt here.

the OIF is weak around the rear-triangle-to-downtube connection, and springs leaks here and there. lots of people have welded in bracing on them, which apparently solves the problem.


"Are bikes so nice as all that?" asked the mole, shyly...

"Nice? They're the only thing," said the Water Rat Solemnly, as he leaned forward on the handlebars. "Believe me, my young friend, there is nothing -- absolutely nothing -- half so much worth doing as simply messing about with bikes."
Re: How Much Hp will this frame take? [Re: LightningPower] #735211
05/14/18 6:31 am
05/14/18 6:31 am
Joined: Aug 2010
Posts: 53
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LightningPower Offline OP

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LightningPower  Offline OP

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Joined: Aug 2010
Posts: 53
North of 49
Well, maybe the Triumph Ninja and the BSA Ninja should become a reality!

I wouldn't worry about the frame leaking oil, because it would be dry, but cracking isn't good. Adding an extra 90 or so Hp won't help the cracking.


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