Transmissions?

[JDOFMEMI]

Dualie

Can you help me on the code for the trans you posted. If I recall right, the first 2 numbers, 20 in this case, represent the engine torque rating, 2000 lbft, and the last 2 represent how many speeds, 18, but what are the middle 2 numbers for?

 

[Dualie]

I think i screwed up the numbers im pretty sure now that the trans in my T-800 was RTLO-20918B the first two numbers being the torque rating.

I have NO idea what the heck the 9 is but im 90% sure all the 18spds were the tq rating then 918 then the ratio either A or B

 

[JDOFMEMI]

Made me curious, and I found this: http://www.google.com/url?sa=t&rct=...nG9zUtJTG8Od6lnQA&sig2=TaUOhJh9W_Y_GrjqdtuChg

I tried to post it, but its too big.

 

[Dualie]

Thats a pretty slick ID poster! Thanks for that!

 

[JDOFMEMI]

Man, That was the fastest reply ever, and you had to open the file first, then answer! I am impressed.

 

[Hopuser]

Well I love 18 speeds we have Allisons and fuller 18s one 15 speed> i like the maunal transmissions because well I like to shift. The automatics are ok if i was buying trucks it would be the Full18's. The new trucks we Ordered have automatics because we casnt get a motor that meets tier with a jake and a retarder combo.
We are hauling 47 ton and need the braking.

 

[JDOFMEMI]

So how does the automatic help whith the lack of the Jake/retarder combo?

I can relate, as that is what I have, and it gives real peace of mind on downhill runs. I have better control on downgreades at 63 ton than the ordinary trucks at 40 ton.

 

[Dualie]

Man, That was the fastest reply ever, and you had to open the file first, then answer! I am impressed.

Just finished my HEF browsing for the night and opened my E-mail client and there was your reply waiting for me. Otherwise im usually slow on the reply here

 

[Hopuser]

So how does the automatic help whith the lack of the Jake/retarder combo?

I can relate, as that is what I have, and it gives real peace of mind on downhill runs. I have better control on downgreades at 63 ton than the ordinary trucks at 40 ton.

We run Cats with jakes and retarders with the 18 speed We also have Detroits with Alisons with the jake retarder combo,now we are getting Cummins and they have to run a automatic to get the jake retarder combo. If we went to the 18 speed we could on have Jakes. and the 47 ton load and the gross weight of 200k we need the breaking power.

 

[buckfever]

18spd on a lowboy and a 8LL for the dumps. Our 13spd we have now works well starting out on a long steep grade being able to split the lowers would be nice. We also have a 87 ford with a 10spd with deep reduction and it dosen't seem to bad. Let ya know once we get some more time on it.

 

[cetane]

18spd on a lowboy and a 8LL for the dumps.

Quoted for true wisdom. :exactly

 

[Greg]

Love my Mack 18 speeds and my Fuller 10 speed with deep reduction. They both have something to offer for everything I do.

 

[Nige]

I used to think that Volvo's 16-speeder was the dogs' danglies, that was until I drove a Scania 12 + 2 range-splitter equipped with Opticruise & Scania's 300HP hydraulic retarder ......... :thumbsup

 

[Pass'n thru]

5 spd main 4 spd aux would be my favorites. I grew up driving those things on really bad logging roads.:bouncegri 18 spd 2 spd rear axles nowadays

Gary

 

[masterwelder]

How do you shift the 2 speed rears?

 

[CRAFT]

VERY CAREFULLY ! ........ It can be done ..... but not by a novice unless you are willing to support him with a really fat wallet !

I've got Eaton DT-461's which are 2spd 46,000 lb Diff's ..... they are awesome but very expensive to repair when things go wrong .... ive had to upgrade them from the original DT-460 that was original from '86

My rear-end ratios are 3:90 top end and 5:21 on the bottom end behind a Super 13spd ....... great combo and love it ! .... ton's of lift and good top end

To answer your question .... usually when stopped.

 

[Will Musser]

I pull a lowboy. RTLO 20918B and a airshift 1241 behind it. I keep a spare 1241 around to go in in a hurry cause mine boils its oil ALOT. I'm getting quick at changing it out now. LOL The middle number ins the 18spd is it's design series number. For example, A 18718 is a roller bearing transmission where a 18918 is a tapered bearing transmission. (I could have that backwards.)

 

[LonestarCobra]

I prefer the 5 speed with a 1241 behind it. All my trucks have a winch or multiple winches, and they make running the winch nice. For a road truck I really like a 13 or 18 speed. I had a 34,000#gvw service truck with a 8LL and it was a sweet combination also.

 

[tireman]

No such thing as a 10 speed w/deep reduction.That would be a 15 speed.Myself, I'm partial to the little red button.

 

[buckfever]

Your right. The next day I went and looked at the sunvisor and there it was, 15 speed. I've had some time to drive it and It's not bad. Still perfer an 8LL in the dirt.