Transmission Retarder vs Exhaust Brake
What is better, which works best ? A MH I'm considering has the transmission retarder is the reason for my question, I have no experience with either.
Forum Discussion
Only motorhome I know of not built on an OTR bus chassis with a transmission retarder is Foretravel.
Actually, there are THREE categories of supplemental braking on DP's:
Exhaust brake-- generally found on smaller engines/coaches. Adequate for lighter coaches.
Engine compression brake-- found on larger (smallest I know of is the Cummins ISL which is offered with it-- 8.9 liter). More braking HP than exhaust brake.
Transmission retarder-- most braking HP. But takes a little care, as you are turning momentum into heat in the transmission. Most come with 10 position joy stick for excellent fine-tuning.
Actually, there are THREE categories of supplemental braking on DP's:
Exhaust brake-- generally found on smaller engines/coaches. Adequate for lighter coaches.
Engine compression brake-- found on larger (smallest I know of is the Cummins ISL which is offered with it-- 8.9 liter). More braking HP than exhaust brake.
Transmission retarder-- most braking HP. But takes a little care, as you are turning momentum into heat in the transmission. Most come with 10 position joy stick for excellent fine-tuning.
