Realistic numbers for Commandos

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Jun 30, 2012
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I have pretty much thought that realistic numbers for a hot Commando would be:
Horsepower = 65 BHP
Torque = 60 NM
I'd like to know what other people think. This video gives figures for modern twin cylinder bikes which I think might be very optimistic. :

 
When you say Hot Commando is that a race prepped bike? or one just off assembly line .... if modded , there are reports of race tuned bikes reaching +80bhp .... been discussed on several threads on this forum over the past several years .... in fact I posted pages (I think or sent them to members who asked) from the Clymer manual with the last chapter dealing with how to tune a stock Commando .... I think that was last year sometime , several others on here have same book including Ashman ...
 
A half a day at the 1992 INOA rally dyno session gave some results.
Typical was 750-38-43 RWHP, 850-39-45 RWHP, My combat 47RWHP(best stock bike)- Pete Kogut real 750 Yellow Peril(track race bike) 55RWHP( he was extremely disappointed) ......- Might have been IIRC, Pete Breidermier-sp-closer to 60 RWHP. Best NHT show of the day...920??unknown
I was the dyno operator's "helper" all day , as there were both coil and magneto's to test from and connect to for data acquisition .
 
A half a day at the 1992 INOA rally dyno session gave some results.
Typical was 750-38-43 RWHP, 850-39-45 RWHP, My combat 47RWHP(best stock bike)- Pete Kogut real 750 Yellow Peril(track race bike) 55RWHP( he was extremely disappointed) ......- Might have been IIRC, Pete Breidermier-sp-closer to 60 RWHP. Best NHT show of the day...920??unknown
I was the dyno operator's "helper" all day , as there were both coil and magneto's to test from and connect to for data acquisition .
Dynojet?
CF SAE?
 
Dynojet?
CF SAE?
I can not reliably say the brand. (28 years ago?) I do know for sure it was an inertia dyno as I within 6 months I specifically sought out and bought a brake dyno.
I still have my print out some where. For helping out, I received a few free runs and tweeked my timing to finally get the 47hp. :)
Full calibrated- who knows? we all ran the same dyno so it was all relative. My dyno is not and has never been calibrated. 3000 hydraulic PSI @ 100mph =100HP
 
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I can not reliably say the brand. (28 years ago?) I do know for sure it was an inertia dyno as I within 6 months I specifically sought out and bought a brake dyno.
I still have my print out some where. For helping out, I received a few free runs and tweeked my timing to finally get the 47hp. :)
Full calibrated- who knows? we all ran the same dyno so it was all relative. My dyno is not and has never been calibrated. 3000 hydraulic PSI @ 100mph =100HP
Sorry "CF" is Correction Factor, not calibration.
As you know, for the benefit of others on the forum, the different correction factors can make a difference in HP
Even if it is the same dyno on the same day. Dyno jet has at least 5 different Correction Factors, Superflow had even more. The Dynojet one for the USA should be SAE, when you see STD, it means a higher HP reading.
For example on a Dynojet dyno using it without any correction factor, I ran a bike over a 24 hour period, same bike, never took it off the dyno, the HP changed 5 HP on a 150 HP motor, for different times in that 24 hours, what changed to alter the HP, was temp air density, Etc.
On the two inertia dynos I am familiar with, Dynojet and Superflow, you can add a Eddy Current Brake.
 
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