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Message |
Chad (Healing)
Registered Member
Username: Healing
Post Number: 1
Registered: 3-2007
Posted From: 67.41.221.134
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 01, 2007 - 9:58 pm: | |
1963 01 eagle 8v71 and a 4 speed with a 3.70 rear end ratio 11 x 24.5 tires. First gear is really fast. What options are there for a low speed 1st gear for this bus? |
larry currier (Larryc)
Registered Member
Username: Larryc
Post Number: 79
Registered: 2-2007
Posted From: 207.200.116.13
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, April 01, 2007 - 11:23 pm: | |
Chad, that is the tranny that took Trailways all over the country for many years. The Fuller family offers everything from 9 to 18 speeds and any of them would work for you. There is some extra work involved with shift linkage and driveline length, but many custom coaches are using these truck trannys. |
Chad (Healing)
Registered Member
Username: Healing
Post Number: 2
Registered: 3-2007
Posted From: 71.33.238.182
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 02, 2007 - 5:56 pm: | |
Thanks Larry,
Is there a 5 speed available with a low 1st gear?
What about a allision auto what model will give me a low first gear and bolt up to the 8v 71? |
marvin pack (Gomer)
Registered Member
Username: Gomer
Post Number: 10
Registered: 3-2007
Posted From: 67.76.81.123
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 02, 2007 - 7:35 pm: | |
chad: You can have a mechanic tear down the tranny and put a lower 1st gear in it,however if it were me and I could, I would just put in another tranny,probably for the same amount of money. I hac a friend that had it done and he finally put in another tranny and was well pleased. He put in a 9 speed and that was great for his driving. |
larry currier (Larryc)
Registered Member
Username: Larryc
Post Number: 80
Registered: 2-2007
Posted From: 205.188.116.13
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 02, 2007 - 11:59 pm: | |
The Allison is real expensive and takes a lot of fuel but the converter gives you power at low speed. I've never owned the 5 speed, if you could find one it might be good. You would still have to redo the shift linkage though. |
larry currier (Larryc)
Registered Member
Username: Larryc
Post Number: 81
Registered: 2-2007
Posted From: 205.188.116.13
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 03, 2007 - 12:23 am: | |
The proper way to drive that 4 speed is irritating at take off. I guess they put that large circumference disc in there so we can slip the hell out of it! |
Cameron Jones (Crazy71)
Registered Member
Username: Crazy71
Post Number: 52
Registered: 12-2006
Posted From: 75.179.153.89
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 03, 2007 - 2:33 am: | |
Please elaborate Larry...
I have a 4sp in my MC8 and you hit the gov pretty quick in 1st....
BUT there have been times that I wish it was more of a granny gear...
Maybe my 8v71 is weak but...if I have to start on a hill.....it can be hard not to stall it.
Once in a no traffic situation, I actually decided to back down a hill, to the flat spot. Then I got a running start at it.
I would like to have a lower low gear, 2nd a bit more than 1st is now (maybe halfway between 1st and 2nd now), a new third gear, and 4th and 5th would be fine the same as 3 and 4 are now.
This would be 5 speeds. I have never driven a 5 spd. Maybe it is close to this.
It seems that 2nd runs out too fast and doesn't have enough pulling power at slower speeds.
3rd is a great gear!! You can get by with a lot in 3rd if you don't lug it with heavy throttle. I find I just have to be light on throttle and let it slowly get there.
4th is about right for my engine hp too.
I assume it is 1:1.
Overdrive would be nice to lower rpms and fuel as I have plenty of top speed even with 22.5 inch tires, but with any sort of overdrive on mine....a slight breeze would force me to downshift. |
George M. Todd (George_mc6)
Registered Member
Username: George_mc6
Post Number: 121
Registered: 8-2006
Posted From: 207.231.80.150
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 03, 2007 - 3:31 pm: | |
Well,
Here's my two cents: The Spicer 1063C is a 1000 ft/lb rated 6 speed. The top five are synchronized, the low is nice and low, and so is the reverse. Its been around forever, and its cheap. Twin countershafts, so its SHORT, and fat. These style are made in 1062, and 1063, I don't know the difference. The letter afterwards is the actual gear ratio choice, and according to the late Darrel Sparkman who put one in his MC6 with a V12, the "C" is the best bus ratio choice. If there is a down side to these, they are a single rod shift, all the "Roadrangers" are also, that is just something we have to live with. 1062s and 3s are also a slightly odd shift pattern, you don't just row it, but close. Note one of the posts on the MC7 stranded in Oregon a couple of weeks ago, with a transmission failure which recommended a 1062, and the comment about "great improvement."
George |
larry currier (Larryc)
Registered Member
Username: Larryc
Post Number: 83
Registered: 2-2007
Posted From: 64.12.116.203
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 03, 2007 - 11:59 pm: | |
I have not seen a syncro tranny in a semi truck. I think this is because it would be hard on a clutch, I don't know what the 1062 sells for, but you would need to do everything to your bus the same as if you had a 9 or 10 speed Fuller Roadranger.(Also common and inexpensive). |
Mark Renner (Boomer)
Registered Member
Username: Boomer
Post Number: 54
Registered: 11-2006
Posted From: 12.180.53.193
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 12:15 am: | |
I made the post about the 1062B that I have for sale for 500.00. This is a 6 speed that is an absolute dream to drive, through all regimes. The ratios are: 1st-8:53; 2nd-4:87; 3rd-3:00; 4th-1:90; 5th-1:33; 6th-1:00. It measures aprox.
28"L X 26"W. It takes a flange type yoke and a single shift rod. The Eagle 5 speed shift tower should work with it. It takes a SAE #1 flywheel housing. This trans. was removed from one of our MC-9's when we converted to HT740. Good clutch assembly comes with it. The 1062 was used in both Prevost and MCI as an option. They were found more often in Canadian spec coaches than in the states. A good stick man can operate a coach more smoothly with this trans than with a
HT740. Alas, today you can't find too many hired hands that can or will drive a manual trans, which is why we converted. Head and shoulders above a 4 speed. |
Cameron Jones (Crazy71)
Registered Member
Username: Crazy71
Post Number: 54
Registered: 12-2006
Posted From: 75.179.153.89
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 12:42 am: | |
Boomer,
If you were close to me....I might just pick that up as a spare project..
I have the factory 4sd in my MC-8. |
George M. Todd (George_mc6)
Registered Member
Username: George_mc6
Post Number: 123
Registered: 8-2006
Posted From: 207.231.80.150
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 1:31 am: | |
Mark,
Thanks for the reinforcement on the 1062. Isn't reverse the same ratio as 1st?
I would like to politely disagree about " you would need to do everything..." A 1062/3 is about 8 inches shorter than a Roadranger, which makes a difference in some applications. Don't think for a minute that I'm knocking a Fuller, because I'm absolutely not. I would like an explanation of how synchros COULD damage a clutch though. (They DO match the gear speeds while the clutch is disengaged!) All the clutch linkage, throwout bearings, forks, etc. will last twice as long, because no double clutching is required. It would be splitting hairs 3 ways to say it saves the clutch wear of slowing down the front of the trans on the double, but. This heap of mine has had an 8844 in it for 38 years, and would have had half the clutch replacements had it had a decent trans in it to start with. Not to mention doing better on hills and backing in campgrounds. |
Mark Renner (Boomer)
Registered Member
Username: Boomer
Post Number: 55
Registered: 11-2006
Posted From: 12.180.53.193
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 12:18 pm: | |
George,
Yes, the reverse ratio is the same as first gear:
8:53. |
Mark Renner (Boomer)
Registered Member
Username: Boomer
Post Number: 56
Registered: 11-2006
Posted From: 12.180.53.193
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 04, 2007 - 1:49 pm: | |
Joe from Edmonton--you called today about the transmission and I tried to return your call several times from different phones. It appears your phone is out of order. Please call me back or email me. The trans is yours if you want it.
(The 1062B 6 speed) Thanks |