skull
''SARCASM: just one of his many talents.''
allright
cool[cl
Later
cool[cl
Later
1936 DiamondT meets 1978 Dodge motorhome
- Thread starter meteorman
- Start date
Help Support Rat Rods Rule:
sgtpontiac
Older, Wiser and Still Buildin'
Congrats Man.....
You are now LEGAL....... [cl
You are now LEGAL....... [cl
bob w
Still crazy after all these years!
Getting titled can be more stressful that actually building the hot rod. Nice to see it all worked out the way you wanted.
Kurtm333
Well-known member
Awesome
That's great, I want to use a 1949 plate for my IH. How did you get the plate assigned and is it for 2 years or lifetime?
Kurt
That's great, I want to use a 1949 plate for my IH. How did you get the plate assigned and is it for 2 years or lifetime?
Kurt
I-R-POPS
''Rusty Mopar Slacker''
The sweet sound of success!!
Congrats. How's that feel to be that close to being on the road?
Congrats. How's that feel to be that close to being on the road?
meteorman
Well-known member
plate
assigning the plate was simple, I just took it in with me when I hauled the ratrod up to the dmv. When they filled out the paperwork, I told them I wanted the plate on it.
it has lifetime registration. no stickers.
I am very excited to get it on the road. Getting all the loose ends tied up this weekend. Should be able to get insurance this week.
assigning the plate was simple, I just took it in with me when I hauled the ratrod up to the dmv. When they filled out the paperwork, I told them I wanted the plate on it.
it has lifetime registration. no stickers.
I am very excited to get it on the road. Getting all the loose ends tied up this weekend. Should be able to get insurance this week.
meteorman
Well-known member
frustration level rising
Ugh.
can't get the brakes working right. spongy pedal.
questioning the master cylinder. or the adjustable proportioning valve?
I used a master cylinder from Speedway. residual valves on the front(2psi) and rear (10psi) and a adjustable prop. valve on the rear.
I am running the unmolested 1978 Dodge motorhome brakes.
Very frustrated- I've bled the brakes 4x over. and the pedal is still soft. I'm suspecting either an air lock in the adjustable proportioning valve. ??
or a problem with the master cylinder. I'm thinking I may need to replace it. ??
it's new, but I could have messed it up installing it.
AND, the electric fan is not working. It turns on usually for a few seconds and then shuts off. I have it on a fuse. 20 amp i think. it's not blowing the fuse. Maybe a loose connection. the ground is solid.
Oh, and it won't start now.
Anyone want to buy a nearly done rat rod??
Ugh.
can't get the brakes working right. spongy pedal.
questioning the master cylinder. or the adjustable proportioning valve?
I used a master cylinder from Speedway. residual valves on the front(2psi) and rear (10psi) and a adjustable prop. valve on the rear.
I am running the unmolested 1978 Dodge motorhome brakes.
Very frustrated- I've bled the brakes 4x over. and the pedal is still soft. I'm suspecting either an air lock in the adjustable proportioning valve. ??
or a problem with the master cylinder. I'm thinking I may need to replace it. ??
it's new, but I could have messed it up installing it.
AND, the electric fan is not working. It turns on usually for a few seconds and then shuts off. I have it on a fuse. 20 amp i think. it's not blowing the fuse. Maybe a loose connection. the ground is solid.
Oh, and it won't start now.
Anyone want to buy a nearly done rat rod??
GJunktionMike
Something's wrong with that boy!
Hang in there.
Kurtm333
Well-known member
Well crap
It's probably your suspicious air lock. Low systems light these can be very difficult to blead.
Sart by bleading at each joint closest to the master. Did you bench bleed it? Bleed at both sides of the residual valves and proportioning valve.
How do the rubber lines look? Do they bulge at all when you pump the pedal?
Go slow and if you need a hand let me know. I could stop by before here weekend.
Kurt
It's probably your suspicious air lock. Low systems light these can be very difficult to blead.
Sart by bleading at each joint closest to the master. Did you bench bleed it? Bleed at both sides of the residual valves and proportioning valve.
How do the rubber lines look? Do they bulge at all when you pump the pedal?
Go slow and if you need a hand let me know. I could stop by before here weekend.
Kurt
sgtpontiac
Older, Wiser and Still Buildin'
I know this will sound crazy but.....
did you make sure you were adjusting the manual proportioning valve correctly?? Friend of mine had his adjusted too much to the front and the pedal was really low and soft....cranked in the backs and the pedal felt normal.....Just a thought.....
did you make sure you were adjusting the manual proportioning valve correctly?? Friend of mine had his adjusted too much to the front and the pedal was really low and soft....cranked in the backs and the pedal felt normal.....Just a thought.....
meteorman
Well-known member
closed and nearly closed the proportioning valve doesn't seem to make a difference.
I am going to bench bleed the master now. I've got a couple lines that I can thread into the bottom of the master and they are bent around to empty into the reservoir. I'm hoping that takes care of it.
I am going to bench bleed the master now. I've got a couple lines that I can thread into the bottom of the master and they are bent around to empty into the reservoir. I'm hoping that takes care of it.
meteorman
Well-known member
pulled one of the drums. the shoes look nearly new. the slave cylinders looked fine. I don't think that was the problem.
So, I re bled the master and got no bubbles, so it doesn't seem like that was the problem either.
I'm thinking that there is an air bubble/pocket stuck somewhere in my system.
I'll try breaking apart more of the joints and bleeding more, then I'll limp down to my local mechanic and see if he can get it for me. ??
[S[S
So, I re bled the master and got no bubbles, so it doesn't seem like that was the problem either.
I'm thinking that there is an air bubble/pocket stuck somewhere in my system.
I'll try breaking apart more of the joints and bleeding more, then I'll limp down to my local mechanic and see if he can get it for me. ??
[S[S
skull
''SARCASM: just one of his many talents.''
master
is the master cylinder below the bleeder valves on the axles? is so you may need to install a one-way in line check valve or sometime called a brake residual valve.
l had this problem on my roadster when the master was under the floor and sat real low, put these in and re-bled the system and it was fine after that.
2 lbs for discs/1O for drums
http://www.speedwaymotors.com/search.html?query=-+Wilwood+Residual+Pressure+Valve+-10psi
Later
is the master cylinder below the bleeder valves on the axles? is so you may need to install a one-way in line check valve or sometime called a brake residual valve.
l had this problem on my roadster when the master was under the floor and sat real low, put these in and re-bled the system and it was fine after that.
2 lbs for discs/1O for drums
http://www.speedwaymotors.com/search.html?query=-+Wilwood+Residual+Pressure+Valve+-10psi
Later
zzrodder
It ain't grey hair, it's chrome!
I'm thinking that the master cylinder you are using does not have the capacity to operate your wheel cylinders properly. It looks like the average GM style disc/drum master which may not move enough fluid per stroke. Do you still have the master from the motorhome? Even though it was probably meant to work with a power booster I think you'll find it has a larger bore size. Shouldn't be too hard to adapt to your pedal assembly, worth a shot.
meteorman
Well-known member
skull,
Yes, I do have the residual valves on the front and rear.
ZZrodder,
you may be right about the master from the motorhome being a larger bore. the overall size of the master looked the same, but the bore may have been larger. I'm pretty sure it's been scrapped but I'll take a look in my shop.
I'm now thinking that my pushrod may not be adjusted properly on the master.
I'll take a look at adjusting that and see if that helps.
I may need to figure out a larger bore master for it if that doesn't work.
thanks for the suggestions!! I couldn't have done this build without this community.
Yes, I do have the residual valves on the front and rear.
ZZrodder,
you may be right about the master from the motorhome being a larger bore. the overall size of the master looked the same, but the bore may have been larger. I'm pretty sure it's been scrapped
but I'll take a look in my shop.I'm now thinking that my pushrod may not be adjusted properly on the master.
I'll take a look at adjusting that and see if that helps.
I may need to figure out a larger bore master for it if that doesn't work.
thanks for the suggestions!! I couldn't have done this build without this community.
meteorman
Well-known member
Finally got the brakes working.
I had mistakenly run the lines from the master to the wrong ends. (flipped back for front )
Now that it's straightened out, i got the lines bled (again) and it works well.
I went ahead and got insurance lined up for Saturday.
first test run then. I'm pumped. I've had it running around the driveway, but not on the road yet. I'm pretty excited.
I had mistakenly run the lines from the master to the wrong ends. (flipped back for front
)Now that it's straightened out, i got the lines bled (again) and it works well.
I went ahead and got insurance lined up for Saturday.
first test run then. I'm pumped. I've had it running around the driveway, but not on the road yet. I'm pretty excited.
Attachments
skull
''SARCASM: just one of his many talents.''
simple
sometimes the simple things are the easiest to mess up, and when ya do it drive ya nuts, then ya find it and go D'0H.
l have done messed up some simple things too, so don't feel bad, it happens, glad ya got it fixed.
Later
sometimes the simple things are the easiest to mess up, and when ya do it drive ya nuts, then ya find it and go D'0H.
l have done messed up some simple things too, so don't feel bad, it happens, glad ya got it fixed.
Later
Last edited:
earthman
Fascinated by rolling objects!
Good work on getting that straightened out MM.
Fun in the sun now! Camera phones poppin', thumbs up and miles of smiles!
Fun in the sun now! Camera phones poppin', thumbs up and miles of smiles!
Kurtm333
Well-known member
As woke
This great news! Now you'll have more credibility when you pull up to someone's junk pile looking for your next project! [cl[cl[cl
Kurt
This great news! Now you'll have more credibility when you pull up to someone's junk pile looking for your next project! [cl[cl[cl
Kurt
meteorman
Well-known member
I drove it on the road for the first time!!! It went well. No problems. Steering was about what I expected for a motorhome chassis converted to a ratrod. Brakes were good. Gotta play with the proportioning valve, I think the rear brakes are not doing enough, the front brakes locked in the gravel and the rear didn't.
