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Transmission losses

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Fri Dec 15, 2017 9:12 am PostPost subject: Transmission losses
Wull
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How much bhp is lost “roughly” on the RA dyno with the Impreza’s?

I’m trying to figure out my options as I might try my best to keep the car within Class D, it’ll be tough though unless I decided against another map, but keeping the power as is will have me down a bit in Class D.
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Sat Dec 16, 2017 9:54 pm PostPost subject:
AK
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about 14% from mem
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Wed Jan 17, 2018 3:58 pm PostPost subject:
Arch
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Any ideas of losses on front wheel drive cars?
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Wed Jan 17, 2018 5:02 pm PostPost subject:
HummuH
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Arch wrote:
Any ideas of losses on front wheel drive cars?


I've always worked to 12% to 15% on my FWD cars. I would have thought AWD would have been more like 15% to 20% but have no idea as to exactly how RA's dyno compares to others.
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Wed Jan 17, 2018 10:30 pm PostPost subject:
Arch
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HummuH wrote:
Arch wrote:
Any ideas of losses on front wheel drive cars?


I've always worked to 12% to 15% on my FWD cars. I would have thought AWD would have been more like 15% to 20% but have no idea as to exactly how RA's dyno compares to others.


I was surprised how low the losses were on the Impreza worked out at about 17.5% so probably would be in the 12-15% area although I suspect it's not a linear loss graph
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Fri Jan 19, 2018 11:12 am PostPost subject: Re: Transmission losses
scottish scrutineer
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Wull wrote:
How much bhp is lost “roughly” on the RA dyno with the Impreza’s?

I’m trying to figure out my options as I might try my best to keep the car within Class D, it’ll be tough though unless I decided against another map, but keeping the power as is will have me down a bit in Class D.


You can always add some ballast to stay within the Class. See the SLS Regulations for the restrictions on the amount of ballast that can be fitted within the car.

Or you could buck the trend and eat more pies Laughing
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Fri Jan 19, 2018 11:56 am PostPost subject:
andybell
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take one of these a day please

(a pie not the girl).
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Fri Jan 19, 2018 12:10 pm PostPost subject:
AK
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i was really wondering wtf i was loading there Laughing slow connection, and the image stopped just after her nose/top lip Laughing

taxi....
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Fri Jan 19, 2018 8:10 pm PostPost subject:
Wull
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AK wrote:
i was really wondering wtf i was loading there Laughing slow connection, and the image stopped just after her nose/top lip Laughing

taxi....


Laughing
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