Bus Conversions dot Com Bulletin Board
July 24, 2014, 11:51:49 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If you had an E-Mag Subscription: It will not be stolen by your mailman or your neighbor who also may be into buses.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1] 2 3  All   Go Down
  Print  
Author Topic: Electronic engines and ten speed manual transmissions  (Read 4917 times)
Bob Belter
Full Member
***
Offline Offline

Posts: 148


Eagle 01 //Cummins M-11 Roadranger OD RTO1110




Ignore
« on: October 19, 2008, 07:07:39 PM »

Ahoy, All,

I'm curious about how many BusFolk are running modern electronic engines, and manual (ten speed Roadranger) transmissions (NOT Autoshift or ZF). 

In my Eagle -01 I have a Cummins M-11, and an Eaton Fuller Roadranger RTO1110 overdrive transmission. 

Am I the only one doing such?  The fuel mileage is great!!!

Thanks  /s/  Bob

Bob, I changed the spelling of your thread to make easier searching. No other changes.
From "Electrinic engines and ten speed manual transmissions"
To "Electronic engines and ten speed manual transmissions"
 

-DF
« Last Edit: October 20, 2008, 03:09:49 PM by Dallas » Logged
Tom Y
Hero Member
*****
Offline Offline

Posts: 880


80 5C With Cummins L10 in Progress




Ignore
« Reply #1 on: October 19, 2008, 07:38:32 PM »

I'll bite.  How great is it?  Thanks Tom Y
Logged

Tom Yaegle
Bob Belter
Full Member
***
Offline Offline

Posts: 148


Eagle 01 //Cummins M-11 Roadranger OD RTO1110




Ignore
« Reply #2 on: October 19, 2008, 08:38:04 PM »

Ahoy, All,

Great bus trip!!!!!  Returned to Carmel, CA a few weeks ago.   5,000+ miles.  St. Paul, Chicago, Okie City, Amarillo, Grand Canyon, Carmel. (will do Pensacola in Jan).

Mileage average was 12.2 mpg.  I have two A-6 A/C (R-22) compressors on the engine, so they cut me down a bit.  Best I've seen is 12.7mpg.  I normally cruise at 65mph, with the engine mosying along at about 1350 rpm.

BTW, I installed and removed (a slobbering) 6v92t and an Allison 750 trans.  This is better.  I'm probably the only guy who ever REMOVED an automatic transmission from a bus.

Enjoy  /s/  Bob   
Logged
Bob Belter
Full Member
***
Offline Offline

Posts: 148


Eagle 01 //Cummins M-11 Roadranger OD RTO1110




Ignore
« Reply #3 on: October 19, 2008, 08:46:17 PM »

Ahoy, All,

To expand a bit on mileage:  My genset fuel IS seperate, so I'm looking only at vehicle fuel.  Mountains make a difference, so that my average for 'left' coast driving which always includes mountains is in general about 11.5 mpg.  I'm also light, at 32,000lbs all-up with 275 gallons of fuel, and 100 gallons of water.

Enjoy  /s/  Bob   
Logged
Sojourner
Jesus Love You!
Hero Member
*****
Offline Offline

Posts: 894


WWW

Ignore
« Reply #4 on: October 19, 2008, 10:04:01 PM »

Bob...Thanks for sharing your reports. I am interested in your M-11 engine, turbo, transmission and axle ratio w/tire size. I am searching for the best combination to re-power MCI-8 in the near future.

I hope you don't mind me asking these questions:

1) What the M-11 is setup in HP & torque or the year model & setup number.
2) Turbo came with it? If not what is the model/size?
3) Transmission is the Fuller Roadranger 10 speed auto shift? What is RTO1110?
4) How you arrange your clutch system linkage...power booster or none or whatever?
5) What is the axle ratio?
6) What is your tire size?
7) If you had a chance do it all over again, what would you suggests?

I want to learn all I can about using automatic Fuller Roadranger or whatever for my intercity bus conversion.

Thank you very much.

Sojourn for Christ, Gerald
Logged

http://dalesdesigns.net/names.htm
Ps 28 Blessed be the LORD, because he hath heard the voice of my supplications. The LORD is my strength and my shield; my heart trusted in him, and I am helped: therefore my heart greatly rejoiceth; and with my song will I praise him
Dreamscape
Guest

« Reply #5 on: October 20, 2008, 02:22:30 AM »

Hey Bob,

I have been contemplating installing the 10 speed RR behind my 8v71 in our 01 Eagle, and getting rid of the four speed.

Any installation wisdom you would like to share?

Paul
Logged
TomC
Hero Member
*****
Offline Offline

Posts: 6671





Ignore
« Reply #6 on: October 20, 2008, 05:55:43 AM »

Paul- what injectors are you running? If you have N65's or larger, it would be more advantageous to have N60's installed-since these are the injectors (even 55's) that the engine/transmission were designed to run with.  If you do have 60's now, I think you'd find the change to a 10spd would not make that big of a difference in fuel mileage-maybe 1/2 to 1 mpg.  If you want better fuel mileage, the best thing to do is to slow down and not accelerate off the light with your foot in it.  Try 55mph top speed.  A 10 spd will be ALOT more work both to install and to operate.  Personally- a good 6 spd overdrive Eaton that is fully synchronized would be my choice to make my life more enjoyable.  Then you'd have a transmission with an extra low and the addition of an overdrive.  Good Luck, TomC
Logged

Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
usbusin
Hero Member
*****
Offline Offline

Posts: 500


'60 PD4104-4355(sold) Now Freightliner Conversion




Ignore
« Reply #7 on: October 20, 2008, 08:26:37 AM »

I agree with you Tom, about the Eaton 6-speed, fully synchronized transmission.  It is so nice.   And, even the wife likes it!  No double-clutching.
Logged

Gary D

USBUSIN was our 1960 PD4104 for 16 years Ustruckin' is our 2001 Freightliner truck conversion
HB of CJ
Hero Member
*****
Offline Offline

Posts: 1231




Ignore
« Reply #8 on: October 20, 2008, 01:54:21 PM »

Wow...cool choice in trannys.  My Crown had the RTO-910, which I THINK has the same gear ratios as your RTO-1150 or RTO-1110.  Yours I believe has a slightly stronger case and inside bearings.

The gear sets on the RTO-910/RTO-1110? are .82, 1.00, 1.26, 1.59, 2.00, // 2.57, 3.14, 3.95, 4.98 and 6.27.  I was told our trannys were practically designed for the 318 8V71N truck mill.

The synkro Eaton/Fuller is very nice.  Also another Fuller tranny that would work well is the TO-14507 7-speed.  A crash box, but easy shifting and has nearly a perfect gear set for a Bus Conversion.  Smiley Smiley Smiley
Logged
Dreamscape
Guest

« Reply #9 on: October 20, 2008, 02:22:45 PM »

I'm not really sure what injectors I have, that is something I will look into.

I just would like to get rid of the tall 1st gear and have a tighter range when shifting.

The Eaton 6 Speed is something I will have to look some research on. That is one trans that had not been referenced to me. Thanks for the information.

It's not the mileage so much, just an easier tranny to work with.

I keep the speed down to about 60, I'm not in a hurry anyway. I just watch for the black smoke then back off. I don't like seeing dollars going out the exhaust pipe!

This is not a project that I will do right away, when I have the time and money it will get done.

Paul

« Last Edit: October 20, 2008, 04:36:09 PM by Dreamscape » Logged
makemineatwostroke
Guest

« Reply #10 on: October 20, 2008, 03:02:05 PM »

Paul; it would be nice to have a rev gear also not a second gear and a solenoid   have a great day
Logged
Dreamscape
Guest

« Reply #11 on: October 20, 2008, 04:37:17 PM »

Paul; it would be nice to have a rev gear also not a second gear and a solenoid   have a great day

I couldn't agree more!

What model number on the Eaton trans. would work?

One day my friend, one day! Grin
« Last Edit: October 20, 2008, 04:42:17 PM by Dreamscape » Logged
Bob Belter
Full Member
***
Offline Offline

Posts: 148


Eagle 01 //Cummins M-11 Roadranger OD RTO1110




Ignore
« Reply #12 on: October 20, 2008, 07:43:06 PM »

Lottsa questions.

First, my Cummins M-11 Select was a CPL 1855, (330hp ??) and is reprogramed to CPL1973 -- 400hp.  Turbo is standard, no wastegate, and it pulls close to 30 psi boost.  It does NOT have the connector for the SAE J1939 protocol to use an Autoshift transmission.

For a 'new' start, I'd suggest the six speed synchro tranny mentioned above (I did not know of this), or the next Cummins of this specie, the ISM which looks about the same, and will accept the Autoshift, plus it will go to 500 hp.

THe DD-60 is very slightly more efficient, but is far larger physically, and some heavier.  If I were starting over, I'd again go with this engine, not the DD60.

These modern engines are so very reliable and long lived that the truckers are smashing up far more trucks than there is a demand for the engines.  They are cheap!!!

My axle ratio is 3.333, my tire size is 11:00x24.5  My transmission ratio 10th gear OD ratio is ~~.78:1  The newer Autoshift trannys have an OD ratio of about ~~75:1, so my  3.333: 1 ratio would be just a bit high.

Clutch:  I know a LOT about clutching-up.  An air ACTUATED clutch will NOT work with a modern double disc clutch.  An air BOOSTED clutch will.  I ended up with a hydraulic actuated clutch, with 1/2" hydraulic tube to couple it.  (Small hose was too slow for double clutching).  I've been planning on doing a piece for BCM on clutch actuatiion, but not tonight. 

Enjoy  /s/  Bob
Logged
Sojourner
Jesus Love You!
Hero Member
*****
Offline Offline

Posts: 894


WWW

Ignore
« Reply #13 on: October 20, 2008, 11:18:01 PM »

Thank you so much Bob for your effort answering my questions.

This may help others as well, but I appreciate you shared your homework with me.

Enjoy your achievement, well done to travel with joy.  Grin Grin Grin

Thank you, Gerald
Logged

http://dalesdesigns.net/names.htm
Ps 28 Blessed be the LORD, because he hath heard the voice of my supplications. The LORD is my strength and my shield; my heart trusted in him, and I am helped: therefore my heart greatly rejoiceth; and with my song will I praise him
bobofthenorth
Hero Member
*****
Offline Offline

Posts: 2071



WWW

Ignore
« Reply #14 on: October 21, 2008, 09:45:20 PM »

Ask him which hand he shifts it with.  And how long it took him to learn.
Logged

R.J.(Bob) Evans
1981 Prevost 8-92, 10 spd
My website
Our weblog
Simply growing older is not the same as living.
Pages: [1] 2 3  All   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!