Jump to content

Recommended Posts

Just keep experimenting.  Unless you really like shifting?  LOL!  I used to play a lot with mine for no reason...then after 10-15 yrs I only use enough gears to get the job done.

Share this post


Link to post
Share on other sites

That's good advice, thanks.  It's time to get in the saddle and try out some of these options.  This discussion has been very valuable in one particular way: I've realized that  I've been spending too much time in the lower gears getting going, and maybe even splitting in the higher gears as well.  Going to forget about LO-LO, and get into the higher gear shifting sequence at about 2nd HI or 3 LO, and take it from there.  

The nice thing about this particular quad is that it's so easy to shift the compound, at least after it's warmed up.  

Appreciate the advice.

  • Like 1

Share this post


Link to post
Share on other sites

Drove it around on the weekend.  I was pretty happy with 2nd Direct, 2nd HI, 3 HI, 4HI, 5 HI.  However, did notice a) had to use clutch on shifts; b) it was a significant jump in these 3-4-5 HI range shifts.  I googled the effective range of the 237 that I have in this truck, and learned you can safely wind it up to 2100, so I believe I'll wind it up a bit more when I try this again.

Also noticed that, when I put brakes on (such as at a stoplight) air pressure leaked out and tank pressure dropped from about 118 max to below 60.  Truck then started sliding backwards, which was heart-stopping, until I kicked in the spring brake and sat and let pressure build again.

Something to fix underneath, I believe.

Share this post


Link to post
Share on other sites
1 hour ago, dayradebaugh said:

Drove it around on the weekend.  I was pretty happy with 2nd Direct, 2nd HI, 3 HI, 4HI, 5 HI.  However, did notice a) had to use clutch on shifts; b) it was a significant jump in these 3-4-5 HI range shifts.  I googled the effective range of the 237 that I have in this truck, and learned you can safely wind it up to 2100, so I believe I'll wind it up a bit more when I try this again.

Also noticed that, when I put brakes on (such as at a stoplight) air pressure leaked out and tank pressure dropped from about 118 max to below 60.  Truck then started sliding backwards, which was heart-stopping, until I kicked in the spring brake and sat and let pressure build again.

Something to fix underneath, I believe.

chock the wheels and slide under while somebody touches brakes, could be a multitude of things, from front to rear!!    terry:MackLogo:

Share this post


Link to post
Share on other sites

Best thing I liked driving a B was the look people give you when you run through a few gears backing up.  :)

Share this post


Link to post
Share on other sites

That's pretty wild.  Going to have to think that one through before trying it.  Maybe clear the area?

Share this post


Link to post
Share on other sites
Posted (edited)

Yes, you can run that 237 up to 2100.   Though some I've heard don't seem to pull strong up there.  Mine seems to do fine?

If you want to not use the clutch, remember to ease off the throttle just before you want to shift.  That eases the torque off the gears and will allow you to pull it out of gear.  If you have it pulled tight, you won't be able to shift without the clutch.  You'll feel it want to slide out of gear when you find that sweet spot. Steep hills, likely  not, as you might loose too much speed to catch the next gear.  It's a learning curve.  It took me all summer to get used to shifting my 237 compared to the old 673.  The shifts were much slower, as the motor doesn't drop in rpm as fast.


Shifting in Reverse?  Simple.  Start in LO, get it moving, ease off throttle, slip into Direct.  Run up RPM, ease off and slip into OD.  Works really slick actually.  I do it every time I put mine away as I back up my driveway into the garage.

 

Air leak?  Check air chambers(broken diaphram) or even a line/fitting.

Edited by Freightrain

Share this post


Link to post
Share on other sites
On 6/11/2019 at 1:26 PM, dayradebaugh said:

 

Also noticed that, when I put brakes on (such as at a stoplight) air pressure leaked out and tank pressure dropped from about 118 max to below 60.  Truck then started sliding backwards, which was heart-stopping, until I kicked in the spring brake and sat and let pressure build again.

Something to fix underneath, I believe.

If it’s leaking that fast you should be able to easily hear it and locate it with someone else applying the brakes while it’s chocked. 

Share this post


Link to post
Share on other sites

Problem with brakes was easy to find.  Apparently aliens came out and removed the line from the quick release valve to the right front brake.  Reinstalled it, everything okey-dokey.

Tried winding up the 237 to close to 2100 to facilitate shifts from 2 HI-3 HI-4 HI-5 HI but I didn't think the engine liked it much.  Sounded like the valves were floating, or what I imagined to be floating valves.  Perhaps more accurate to say that the power in the engine dropped dramatically at about 2000.  In any case, I think the whole sequence worked well from 2 LO-2 DIRECT-2 HI-3 DIRECT-3 HI-4 DIRECT-4 HI-5 HI.  In other words, splitting in 2, 3, & 4 across DIRECT & HI.  

I must say that the truck runs like a champ, although I don't know that I'd care to make my living in it, or drive cross country, but plenty of guys did quite nicely.

The shifts in the compound of course are dead easy without clutch.  To shift both boxes, have to use clutch, as follows.  Upshift is Main box first, compound 2nd.  Downshift is the reverse.

Does this sound reasonable?

Thanks

Share this post


Link to post
Share on other sites
Posted (edited)

I've heard some 237 rev better then others.   Guess it's all in the pump setting.  They were meant to run on the governor all day, so you aren't really hurting anything.  On road, mine cruises at 1800 all day.

Shifting is correct.  Once in next higher main gear, blip the throttle and move the compound back to UD.  Downshifting:  Run the compound back down OD, D, UD, then move it back up to OD(left out throttle and let motor drop down enough to get in gear.  Then pull main out and rev up motor and put in next lower gear.  Repeat.


Believe me, after 18 yrs of traveling in mine, it's wearing on me.  Even with all the upgrades, it still beats you to death ESPECIALLY with the roads around here.  Smooth roads, it fine.  Cruises right along.  Few and far between.

Edited by Freightrain

Share this post


Link to post
Share on other sites
Posted (edited)

You can shift the main without the clutch, but sometimes it takes longer to learn the finesse to get the load off the gears to allow it to change.  Flat land it should be easy.  Hills, not so much.

 

Here is a video I made about 15 yrs ago, long before Youtube.  It got passed around the internet and a couple people posted it to Youtube when that came on the scene.  There are many more similar videos>  This is when it still have the 673 in it and I was just bobtailing it around.  with 4.62 gears, I would start in 3rd LO.

 

I'm getting soft.  I have A/C and power steering now, along with the 237.

Edited by Freightrain
  • Like 1

Share this post


Link to post
Share on other sites
5 hours ago, JoeH said:

If he won't drive a real truck maybe offer him one o these...

maxresdefault.jpg

Pretty much agree.

Share this post


Link to post
Share on other sites
4 hours ago, Freightrain said:

You can shift the main without the clutch, but sometimes it takes longer to learn the finesse to get the load off the gears to allow it to change.  Flat land it should be easy.  Hills, not so much.

 

Here is a video I made about 15 yrs ago, long before Youtube.  It got passed around the internet and a couple people posted it to Youtube when that came on the scene.  There are many more similar videos>  This is when it still have the 673 in it and I was just bobtailing it around.  with 4.62 gears, I would start in 3rd LO.

 

I'm getting soft.  I have A/C and power steering now, along with the 237.



Many thanks for the vid; You're pretty smooth in that video; nice job.  I'll be studying this. 

Years ago bought a VHS tape about 2-stick shifting, that got me going.  Set up a couple of broomsticks in the living room, as I recall to practice.  Vid was from Bill Comcowich.  Can't play the tape anymore.

Wouldn't mind some power steering, for sure, but the reading I did on the subject suggested that the air driven systems available as add-ons were troublesome.  

 

Share this post


Link to post
Share on other sites
Posted (edited)

You will learn to take your time.  You can't rush these transmissions.  Smooth and steady will get it there.  Timing is everything.  I had a real time after putting the 237 in, as it does not rev as the old 673 did and I had to slow my shifting even more.

 

Someone posted my two hand shifting that I did a year or so later after the first video.

 

Yes, I have all the ATHS videos from back when.  I also have the special all twin stick DVD that Lindsey put out about 15 yrs ago?   Neat stuff.  There is some of it on Youtube, but not all.  I met Dr. Bill at the Syracuse ATHS nationals in '03.  He invited everyone to climb in his W71 and play around.

I put air steering on mine about 5 yrs ago.  I gathered up pieces from a fellow here on BMT.  I got lucky, it was a system from a fire truck and very low use.   Everything was in good shape, just needed a few things touched up.  It has worked flawlessly.  Yes, they do have their drawbacks and I suppose when they wear out they can be bad.  Surely beats Armstrong steering after all these years of driving it.   Air o Matic was bought out by a company in Cleveland, Ohio(local to me).  They offered some parts, but I see their website does not list it anymore.  Likely going to get real scarce.

Mine after cleaning it up, fixing the mounting bushing for the ram and installing a new boot(rancho shock boot)

IMG_20141222_184204_577.jpg

 

Here is the new bearing installed.  The original bearing was gone, I had to make a bushing for this bearing as it was an odd size.  Working at a machine shop has its advantages.

IMG_20150124_214334_878.jpg

Edited by Freightrain

Share this post


Link to post
Share on other sites
13 hours ago, dayradebaugh said:

Wouldn't mind some power steering, for sure, but the reading I did on the subject suggested that the air driven systems available as add-ons were troublesome.  

The Garrison air assist has worked pretty well on a Brockway I have.  If you could get the gear in decent condition, it would be something to consider.

Shifting takes practice, skill and coordination.  Sometimes skill and coordination is lacking with me and about then, patience jumps out the window!

  • Like 1

Share this post


Link to post
Share on other sites
16 minutes ago, j hancock said:

 

Shifting takes practice, skill and coordination.  Sometimes skill and coordination is lacking with me and about then, patience jumps out the window!

LOL!!!   That goes for me too!  Some days it would have been better to just stay home.

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...