Since I have Versions 1 , 2.0, (had 3.0 which burned out right away and was replaced with version 3.5), and 3.5, and now 4.5, I can compare them all and post here.
Preliminary observations based upon all posted previous reviews and complaints I am aware of:
1. Nylon gears - not changed
2. Weird sounding horn - not changed since Version 2 (Warbling rapid repeat sound) (See #4)
3. Bell much louder than both announcements and horn - not changed
4. Remote Control - Cosmetic change in appearance (nice) otherwise not changed since Version 1. Version 1 only allowed a single honk for the horn and after that remote control was electronically modified to produce a singe honk rapidly repeated to sort of sound like a continuous horn (but not really). That has remained ever since. NOTE: If you use any remote newer than Version 1 you will get that (semi) continuous sound. Or if you own Version 1 and Menards would sell a newer remote you will get continuous sound. The change needs to be made on the engine circuit board, not the remote.
NOTE TO MENARDS: Since you have now produced no less than FOUR remotes that will allow those who bought Version 1 to have a continuous horn instead of a single sick goose honk make any one of them them available for the 200 people who bought Version 1. Call them "Betas" if you must
5. CORRECTION: Momentum was NOT changed with this version making engine coast further than before when you slow it down. I was wrong.
-----I made a mark on the track for a power cutoff point.
-----I applied 10V to the track and slowed the Beta 4.5 engine down until just before the headlight goes out. Then I let it coast at that speed until it reached the mark. When it reached the mark I cut the throttle to zero on the remote and let it coast until it stopped. I did it three times and it stopped in the same place. I made a second mark at the stopping point.
----- The I put versions 2.0 and 3.5 on the track and did the same test. They stopped in the same place. Three tests each of versions 2.0, 3.5, and 4.5 engines with Versions 2.0, 3.5, and 4.5 remotes. All stopped in approximately the same place.
So, Version 1 had abrupt starts and stops (improved by wiring motors in series) and also lowering the track voltage. Versions 2.0, 3.0, 3.5, and 4.5 were an improvement from Version 1, but Menards never made any further changes after version 2.0 despite three new Betas. There STILL needs to be better engine control and they don't seem to be addressing it.
6. Spare Traction tires: New with this version
7. Load pulling ability. Seems identical with all versions. Not bad.
8. Announcements have a slightly tinnier sound than all previous versions. Not as clear, but not terrible.
9. The case of the fluctuating horn height. Versions 1, 2.0, and 3.5 have raised horns. Versions 3.0 and 4.5 have horns flush with the roof surface. Probably same horns but they sunk them in further at the factory.
10. You can only run one at a time. Since every remote runs every version only one engine responds to any given remote and if you turn two remotes on still only one engine will respond.
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I still plan on opening up this version and Version 3.5 to do an internal comparison and posting back.
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UPDATE: I opened a 3.5 and the new 4.5 and did a side by side comparison. They are identical in every way I can see including the PCBs. If someone wants me to post photos I'll take some.
Conclusion: Menards has released identical betas since version 2.0
Time to release the production model Menards if you aren't going to make any changes or tell us any new information.
John