RM 125cc Question. - SV650.org

hindle8907 · 07-10-09, 12:56 PM

My mates just got a RM 125cc i dont know what year it is but he was telling me over the phone that its 60BHP .....

I find that hard to belive around what BHP are 2 stroke 125cc dirt bikes ?

I was allways under the impression it was around 30?

Is he talking rubish ?

07-10-09, 01:01 PM

Well a GP125 could make about 60BHP and the engine might be out of that.

But I'd go with the rubbish thing.

07-10-09, 01:03 PM

lol!!!!!!

a hightly Tuned RS125 will get ~40 maybe 50ish. But were are talking serious race bikes here.

I should think a Crosser would be making ~20- 40ish Max. 60 is total Bollox!

wattyfred89 · 07-10-09, 01:07 PM

Bless your mate he must be getting mixed up

07-10-09, 01:48 PM

are you sure it isnt a 250!

Ask to see a dynometer output

otherwise, tell him he's very silly, and also warn him that if it IS putting out 60bhp, he better learn how to do engine rebuilds because he might be doing alot of them!

07-10-09, 01:51 PM

Yamaha DTR had 17bhp and that was the fastest 125 learner legal bike behind the RS125.
The SV is only 73(ish)bhp IRRC so a 125 is never going to be putting out 60. Someone spiked his cornflakes mate.

EDIT: I realise your asking about the RM and not the DR, the RM been the pure crosser. Not sure if it makes any odds but it certainly rules out my comparrison to the DTR.

07-10-09, 01:58 PM

even a modern 600cc IL4 supersport would be struggling to get twice the power output (consider that in general a two stroke can produce twice as much power per cc than a 4 stroke...)

07-10-09, 02:03 PM

Quote:

Originally Posted by Alpinestarhero

even a modern 600cc IL4 supersport would be struggling to get twice the power output (consider that in general a two stroke can produce twice as much power per cc than a 4 stroke...)

Thats cus two strokes are AWESOME

07-10-09, 02:28 PM

Quote:

Originally Posted by suzsv650

Thats cus two strokes are AWESOME

hell yea!!

here's one for ya

http://www.youtube.com/watch?v=jXHvY...eature=related

For those that havn't seen that engine before...thats the lower powoer version. there is one that puts out more than 108,000 hp and over 5.5 MILLION lbft (ftlb?) of tourque

Yummy

07-10-09, 04:35 PM

Quote:

Originally Posted by suzsv650

Thats cus two strokes are AWESOME

well they are sometime's.

07-10-09, 12:56 PM	#1
hindle8907 Member Mega Poster Join Date: May 2009 Location: Manchester Posts: 1,492	RM 125cc Question. My mates just got a RM 125cc i dont know what year it is but he was telling me over the phone that its 60BHP ..... I find that hard to belive around what BHP are 2 stroke 125cc dirt bikes ? I was allways under the impression it was around 30? Is he talking rubish ? __________________ 2006-2007 -- Gilera Runner 50 - Sold 2007-2008 -- Hyosung XRX125 - Stolen 2009-2010 -- 05 SV650n - CAT - B 2010-Now -- 00 SV650s & 00 SV650n & GSXR 600 K2 Last edited by hindle8907; 07-10-09 at 01:24 PM.

07-10-09, 01:01 PM	#2
Tiger 55 Guest Posts: n/a	Re: RM 125cc Question. Well a GP125 could make about 60BHP and the engine might be out of that. But I'd go with the rubbish thing.

07-10-09, 01:03 PM	#3
suzsv650 Guest Posts: n/a	Re: RM 125cc Question. lol!!!!!! a hightly Tuned RS125 will get ~40 maybe 50ish. But were are talking serious race bikes here. I should think a Crosser would be making ~20- 40ish Max. 60 is total Bollox!

07-10-09, 01:07 PM	#4
wattyfred89 Member Join Date: May 2009 Location: Watford, Hertfordshire Posts: 202	Re: RM 125cc Question. Bless your mate he must be getting mixed up

07-10-09, 01:48 PM	#5
Alpinestarhero Guest Posts: n/a	Re: RM 125cc Question. are you sure it isnt a 250! Ask to see a dynometer output otherwise, tell him he's very silly, and also warn him that if it IS putting out 60bhp, he better learn how to do engine rebuilds because he might be doing alot of them!

07-10-09, 01:51 PM	#6
Owenski Guest Posts: n/a	Re: RM 125cc Question. Yamaha DTR had 17bhp and that was the fastest 125 learner legal bike behind the RS125. The SV is only 73(ish)bhp IRRC so a 125 is never going to be putting out 60. Someone spiked his cornflakes mate. EDIT: I realise your asking about the RM and not the DR, the RM been the pure crosser. Not sure if it makes any odds but it certainly rules out my comparrison to the DTR. Last edited by Owenski; 07-10-09 at 02:02 PM.

07-10-09, 01:58 PM	#7
Alpinestarhero Guest Posts: n/a	Re: RM 125cc Question. even a modern 600cc IL4 supersport would be struggling to get twice the power output (consider that in general a two stroke can produce twice as much power per cc than a 4 stroke...)

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